Effects of Grain Size and Temperature on Sub-Critical Crack Growth in A533 Steel,
Abstract
Grain size and temperature affect sub-critical crack growth rate in A533 B steel only to the extent to which they affect K sub Ic and the onset of rapid fracture. The zero growth threshold seems virtually unaffected by either grain size or temperature within the brittle fracture range. As the testing temperature is reduced, the value of K sub Ic approaches the threshold value, eliminating the central portion of the da/dN vs Delta K curve. The observed fatigue crack growth rates then reflect both the variability associated with nearness of Delta K and the high values of da/dN associated with nearness of K sub max to K sub Ic.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1976
- Accession Number
- ADA033466
Entities
People
- F. R. Stonesifer
Organizations
- United States Naval Research Laboratory